model 252 datasheet - SK Environmental Flue Gas Analyser, Analyzer, CEMS, Emission, Oxygen, Pressure Monitoring & Control Skil Emission Monitors are designed to measure dust and smoke discharged from Furnaces, Incinerators, Boilers and industrial plant. Satisfying legal requirements to monitor smoke and particulate emissions into the atmosphere. The Model 252 Visible Emission Monitor may be used to continually monitor and display optical density or opacity, and ...